package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.entity.User;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //将用户输入的密码进行md5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //密码比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置账号状态，默认正常状态 1正常 0禁用
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码,默认密码为123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //将数据插入到数据库中,
        employeeMapper.save(employee);
    }

    @Override
    public Result editPassword(PasswordEditDTO passwordEditDTO) {
        passwordEditDTO.setEmpId(BaseContext.getCurrentId());
        Employee employee = employeeMapper.getById(passwordEditDTO.getEmpId());
        String oldPassWord = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        //将用户输入的密码进行比较
        if (employee.getPassword().equals(oldPassWord)) {
            passwordEditDTO.setNewPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
            employeeMapper.editPassword(passwordEditDTO);
            return Result.success();
        }else {
            return Result.error(MessageConstant.PASSWORD_EDIT_FAILED);
        }
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageResult result = new PageResult();
        //开始分页查询，设置分页的参数信息
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> employeePage = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = employeePage.getTotal();
        result.setTotal(total);
        result.setRecords(employeePage.getResult());
        return result;
    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.updateStatus(employee);
    }

    @Override
    public void updateById(Employee employee) {
        //调用修改员工信息的方法
        employeeMapper.updateById(employee);
    }

    @Override
    public Employee getById(Long empId) {
        return employeeMapper.getById(empId);
    }

}
